2160 Dyess Avenue, Rapid City SD 57701-9011 (605) 343-3260
420 E Saint Patrick Street # 110, Rapid City SD 57701-4200 (605) 348-5850
601 E 48th Street N, Sioux Falls SD 57104-0619 (605) 332-5371
Engineering Laboratory, Except Testing in Minnesota
Engineering Laboratory, Except Testing in Iowa
Engineering Laboratory, Except Testing in Wyoming